CN101324178A - Casing tube heightening well head safety compensation apparatus - Google Patents
Casing tube heightening well head safety compensation apparatus Download PDFInfo
- Publication number
- CN101324178A CN101324178A CNA200810116398XA CN200810116398A CN101324178A CN 101324178 A CN101324178 A CN 101324178A CN A200810116398X A CNA200810116398X A CN A200810116398XA CN 200810116398 A CN200810116398 A CN 200810116398A CN 101324178 A CN101324178 A CN 101324178A
- Authority
- CN
- China
- Prior art keywords
- sleeve
- heightening
- pedestal
- well head
- casing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The invention discloses a wellhead safety compensating device for the heightening of a sleeve, which comprises: a tubular base which is installed between a surface sleeve and an oil pipe four-way and has appropriate length; a sealed rubber layer with heat resistance is arranged on the inner circumferential surface of the base; the port of an underground sleeve is inserted into the sealed rubber layer, and the outer circumferential surface of the underground sleeve forms sealed adhesion with the inner wall of the sealed rubber layer. The wellhead safety compensating device for the heightening of the sleeve has the following advantages that: enough space is designed in the wellhead safety compensating device for the heightening of the sleeve so as to compensate the elongation of the sleeve under the condition of being heated, and the requirement of hot fluid injection operation of an offshore oilfield viscous oil pump can be met. When the hot fluid injection operation of the offshore oilfield viscous oil pump is carried out, the sleeve can realize whole-process sealing completely in the process of continuous extension under the condition of being heated, with safe and reliable sealing performance.
Description
Technical field
The present invention relates to a kind of casing tube heightening well head safety compensation apparatus that is used for the offshore oilfield heavy oil wells.
Background technology
At sea in the heavy oil wells in oil field, the temperature that mainly adopts the method for hot-fluid injection (as steam or hot water) to improve the stratum viscous crude reduces the viscosity of stratum viscous crude, changes the fluid ability of stratum viscous crude, reaches the purpose that improves oil recovery factor.Yet, because in all heavy oil wells of offshore oilfield, when the brill completion is lowered to sleeve pipe, (so-called special special cementing process, principle and effect is meant: when well cementing operation the sleeve pipe lower end is fixed all not carry out special special cementing technology, carry sleeve pipe on the pre-tensile stress by designing requirement then, make most of sleeve pipe before cement paste does not solidify, bear certain tensile stress, treat to unclamp the pre-tensile stress of carrying sleeve pipe again after cement paste solidifies.When hot-fluid injection, pre-tensile stress can be offset the part compressive stress that sleeve pipe is produced by thermal stretching).
This shows that the heavy oil wells of special special cementing technology is not carried out in the oil field at sea, the operation of heated fluid injection (as steam or hot water), along with the temperature of injecting heavy oil wells raises, sleeve pipe is heated and must extends (increasing) to well head.Therefore, for the heavy oil wells of offshore oilfield, adopt hot-fluid injection (as steam or hot water), sleeve pipe is subjected to thermal stretching (increasing) to well head, produces segment elongation distance (elongation height) and sleeve pipe elongation (increasing) is inevitable at well head.How compensating the problem that well head produces segment elongation distance (elongation height) under the condition of safety, is a very thorny key technology difficult problem.If this very thorny key technology difficult problem does not solve, just can't realize the operation of the heavy oil wells heated fluid injection (as steam or hot water) of offshore oilfield.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of casing tube heightening well head safety compensation apparatus, when sleeve pipe is heated constantly elongation (increasing), realizes omnidistance Sealed casing pipe all the time.
In order to address the above problem, the invention provides a kind of casing tube heightening well head safety compensation apparatus comprises: be installed in the tubular pedestal with suitable length between surface pipe and the oil pipe four-way, the pedestal inner peripheral surface is provided with resistant to elevated temperatures caulking gum layer, the port of down-hole casing is inserted in the described caulking gum layer, and the inwall of the outer circumference surface of this down-hole casing and described caulking gum layer forms the sealing applying.
Preferably, be used to detect described down-hole casing is subjected to thermal stretching in described pedestal distance detection mechanism also being provided with on the described pedestal.
Preferably, described testing agency is a pressure watchband needle valve.
Preferably, described pressure watchband needle valve is more than 3 or 3, and along described pedestal axial distribution.
Casing tube heightening well head safety compensation apparatus of the present invention have a following advantage: in casing tube heightening well head safety compensation apparatus, design has enough spaces the elongation (increase) of compensating jacket under the situation of being heated to measure, and satisfies the requirement of offshore oilfield heavy oil wells heated fluid injection (as steam or hot water) operation.During oil-field thick-oil well heated fluid injection (as steam or hot water) operation at sea, sleeve pipe constantly extends in the process of (increasing) under the situation of being heated, and can realize omnidistance sealing fully, sealing performance safety, reliable.The well head that reaches offshore oilfield heavy oil wells heated fluid injection (as steam or hot water) is realized the operation of offshore oilfield heavy oil wells heated fluid injection (as steam or hot water) under the condition of safety, sealing.
Description of drawings
Fig. 1 is a part section structural representation of the present invention;
Fig. 2 is stretched to the structural representation of the pressure watchband needle valve that is arranged on bottom position for down-hole casing of the present invention is heated.
The specific embodiment
As shown in Figure 1, the present invention includes: be installed in the tubular pedestal 3 between surface pipe 5 and the oil pipe four-way 2 with suitable length, pedestal 3 inner peripheral surfaces are provided with resistant to elevated temperatures caulking gum layer 4, the port of down-hole casing 6 is inserted in the caulking gum layer 4, and the inwall of the outer circumference surface of down-hole casing 6 and caulking gum layer 4 forms the sealing applying.Be provided with production tree 1 on oil pipe four-way 2 tops.
In addition, as shown in Figure 1, on pedestal 3, also be provided with and be used to detect down-hole casing 63 distance detection mechanisms 7 that are subjected to thermal stretching in pedestal.Testing agency 7 is a pressure watchband needle valve, and pressure watchband needle valve is (to Figure 1 shows that 3, comprise pressure watchband needle valve 71,72,73) more than 3 or 3, and along pedestal 3 axial distribution.
Resistant to elevated temperatures caulking gum layer 4 is set in pedestal 3, when down-hole casing 6 is heated constantly elongation (increasing), can realizes omnidistance sealed well setting of casing 6 all the time.In addition, on pedestal 3, be provided with down-hole casing 6 elongation (increasing) detection architecture 7, can observe and safety is judged that sleeve pipe is heated extend (increasing) state pedestal 3 in good time.
The present invention in use, hot fluid (steam or hot water) enters into the thick oil underground well layer by production tree 1, oil pipe four-way 2 and hot fluid tubing string 8 along arrow A direction shown in Figure 1 successively, to viscous crude heating, reduces the viscosity of viscous crude.In the process of heated fluid injection, well head has been full of certain pressure, and carries out the operation of heated fluid injection under hermetic state.Fig. 1 is illustrated in the state of the operation of heated fluid injection.At this moment, the external surface of the port of down-hole casing 6 and rubber sealant 4 form sealing and fit, but because down-hole casing 6 also is not subjected to thermal stretching, also are in the position of pressure watchband needle valve below 71.Along with the injection of hot fluid, down-hole casing 6 begins to be subjected to thermal stretching, and the detection mouth of pressure watchband needle valve 71 is blocked, and as shown in Figure 2, shows that the port of down-hole casing 6 has been stretched to the position between pressure watchband needle valve 71 and 72 this moment.Pressure watchband needle valve 71 does not just have force value to show.When the detection mouth of pressure watchband needle valve 72 was blocked, pressure watchband needle valve 72 did not just have force value to show.Continue elongation, when the detection mouth of pressure watchband needle valve 73 was blocked, pressure watchband needle valve 73 did not just have force value to show.This moment, explanation arrived the deathtrap, needed to suspend the injection of hot fluid.
By the way, can satisfy the needs of offshore oilfield heavy oil wells heated fluid injection (as steam or hot water) operation comprehensively, fundamentally thoroughly solve sleeve pipe and be subjected to this very vital technical barrier of thermal stretching, not only can omnidistance sealed well setting of casing 6 be subjected to thermal stretching, and, provide objective assurance for improving offshore oilfield heavy oil wells oil recovery factor by the checkout gear 7 real-time elongation situations that detect down-hole casing 6.
In sum; being preferred embodiment of the present invention only below, is not to be used to limit protection scope of the present invention, therefore; all any modifications of being done within the spirit and principles in the present invention, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1, a kind of casing tube heightening well head safety compensation apparatus, it is characterized in that, comprise: be installed in the tubular pedestal between surface pipe and the oil pipe four-way with suitable length, the pedestal inner peripheral surface is provided with resistant to elevated temperatures caulking gum layer, the port of down-hole casing is inserted in the described caulking gum layer, and the inwall of the outer circumference surface of this down-hole casing and described caulking gum layer forms the sealing applying.
2, device as claimed in claim 1 is characterized in that, is used to detect described down-hole casing is subjected to thermal stretching in described pedestal distance detection mechanism also being provided with on the described pedestal.
3, device as claimed in claim 2 is characterized in that, described testing agency is a pressure watchband needle valve.
4, device as claimed in claim 3 is characterized in that, described pressure watchband needle valve is more than 3 or 3, and along described pedestal axial distribution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810116398XA CN101324178B (en) | 2008-07-09 | 2008-07-09 | Casing tube heightening well head safety compensation apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810116398XA CN101324178B (en) | 2008-07-09 | 2008-07-09 | Casing tube heightening well head safety compensation apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101324178A true CN101324178A (en) | 2008-12-17 |
| CN101324178B CN101324178B (en) | 2012-07-04 |
Family
ID=40187857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810116398XA Expired - Fee Related CN101324178B (en) | 2008-07-09 | 2008-07-09 | Casing tube heightening well head safety compensation apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101324178B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104005749A (en) * | 2014-05-15 | 2014-08-27 | 中国海洋石油总公司 | Offshore thickened oil thermal recovery wellhead lifting monitoring device |
| CN104005746A (en) * | 2014-05-15 | 2014-08-27 | 中国海洋石油总公司 | Compensation device for preventing thickened oil thermal recovery well mouth on sea from ascending |
| CN111980613A (en) * | 2020-08-31 | 2020-11-24 | 中国地质科学院勘探技术研究所 | Offshore drilling process for deck without casing layer |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4582132A (en) * | 1983-11-14 | 1986-04-15 | Chevron Research Company | Wellhead expansion assembly |
| CN2595992Y (en) * | 2002-12-23 | 2003-12-31 | 胡德胜 | Well-head thermal stress compensator for hot injection and hot prodn. of thickened oil recovery |
| CN2688877Y (en) * | 2004-03-31 | 2005-03-30 | 刘国光 | Thermal oil extracting apparatus on well top |
| CN1920245A (en) * | 2006-09-17 | 2007-02-28 | 辽河石油勘探局 | Geological observation well mouth apparatus with exploitation process of thick oil steam drive gravity for oil leakage |
| CN201246128Y (en) * | 2008-06-24 | 2009-05-27 | 胜利油田胜机石油装备有限公司 | High temperature and high pressure thermal recovery well head apparatus |
-
2008
- 2008-07-09 CN CN200810116398XA patent/CN101324178B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104005749A (en) * | 2014-05-15 | 2014-08-27 | 中国海洋石油总公司 | Offshore thickened oil thermal recovery wellhead lifting monitoring device |
| CN104005746A (en) * | 2014-05-15 | 2014-08-27 | 中国海洋石油总公司 | Compensation device for preventing thickened oil thermal recovery well mouth on sea from ascending |
| CN111980613A (en) * | 2020-08-31 | 2020-11-24 | 中国地质科学院勘探技术研究所 | Offshore drilling process for deck without casing layer |
| CN111980613B (en) * | 2020-08-31 | 2022-06-03 | 中国地质科学院勘探技术研究所 | Offshore drilling process for deck without casing layer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101324178B (en) | 2012-07-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201460803U (en) | Self-expanding packer when meeting oil and water | |
| CN109707333A (en) | Self-expansion patching method for oil well casing | |
| CN201250626Y (en) | Wellhead suspension device adopting coiled tubing as production string | |
| CN109403902A (en) | A integrated device that is used for casing to decrease well combined material subsidy | |
| CN201650147U (en) | Hydraulic casing centralizer | |
| CN104213888A (en) | Down-hole steam injection string of thick-oil thermal production well | |
| CN101324178B (en) | Casing tube heightening well head safety compensation apparatus | |
| CN104070596B (en) | A kind of superhigh temperature hardened oilwell cement curing autoclave and using method thereof | |
| CN204646172U (en) | Pressure sealing casing head can be repaired | |
| CN100412313C (en) | Plug-free cement filling method for well fixing | |
| CN101173605A (en) | Layered quantitative gas filling device | |
| CN2622377Y (en) | Contact real type thermal stress compensator | |
| CN206299367U (en) | A kind of metal sealing packer | |
| CN206554903U (en) | Thermal stress compensator for casing of thermal production well | |
| CN105275422A (en) | Thermal recovery casing head | |
| CN108222880A (en) | A kind of hp-ht well special cementing construction technology | |
| CN204252927U (en) | Well cementing tool | |
| CN204344050U (en) | Capillary anti-drop sealing device | |
| CN209761409U (en) | Micro-reducing thermal compensator for thermal production well | |
| CN203394451U (en) | Leakage-sealing water-plugging oil production pipe column for thickened oil horizontal well | |
| CN207499813U (en) | A kind of telescoping tube | |
| CN208152979U (en) | A kind of bi-directional slip formula external casing packer | |
| CN201241654Y (en) | Thermal production well head apparatus on the sea | |
| CN107023273A (en) | Ground hydraulic-control gasbag-type all-metal sealing packer | |
| CN201635703U (en) | Sleeve pipe pressure test plugging device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20170709 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |